Question

what do the notation E & Z
signity?​

Answer 1

Explanation:

E–Z configuration, or the E–Z convention, is the IUPAC preferred method of describing the absolute stereochemistry of double bonds in organic chemistry. It is an extension of cis–trans isomer notation (which only describes relative stereochemistry) that can be used to describe double bonds having two, three or four substituents.

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Answer 2

Answer:

This is a classification for geometrical isomerism.

Explanation:

E - type denotes trans type isomer and

Z - type denotes cis type isomer.

when higher priority groups / lower priority groups are on the same side , it denotes Z- type

and on the opposite side ,then E-type